If we chose to convert it to rental, and keep all that money completely seperate from our personal finances, do we do it all in his name? 

We have in-person meetups once a month in Northern NJ.

Here are a few I recommend: "Rich Dad, Poor Dad" by Roberto Kiyosaki; "Set for Life" by Scott Trench; "The Unofficial Guide to Real Estate Investing" by Spencer; "The BiggerPockets Ultimate Beginners Guide" found here on BP; "The Book on Rental Property Investing" by Brandon Tuner.

I personally invest here for both the cash flow and appreciation.

The only person who comes out ahead is the person who gives you the playbook and collects fees off of you. 

Is she liable for any damages or personal financial liabilities in which he will be responsible?

If you're truly interested in the property then you need to get in front of this person.

How would you pay the person if this is part-time help?

Please email me at my personal email if you have time to chat - need people in my area to offer guidance and suggestions.

I am aware that NJ has a personal occupancy provision in which the landlord gives at least 2 months written notice stating that the owner would like to occupy the downstairs unit once the tenants lease expires.